Alaska earthquakes

M3.3 earthquake 112 km SE of Atka, Alaska

A magnitude 3.3 earthquake struck 112 km SE of Atka, Alaska on Fri, Nov 13, 2020, 8:50 PM HAST (06:50 UTC), 55 km (34 mi) below the surface.

A larger quake followed: M4.1 147 km E of Atka, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.3 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-11-14 06:50:22 UTC
Depth
54.6 km (34.0 mi), shallow
Epicenter
51.536° N, 172.966° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
3.3ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 stations
2.9ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 9.4 km horizontally, 29.9 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
219°, poorly surrounded by stations
Stations used
29

Nearby

Within 100 km, magnitude 1.5 and up: 33 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 3.2112 km ESE of Atka, Alaska · 2148 days ago · 35 km deep · 41 km away
  2. 2.4161 km SSE of Atka, Alaska · 2147 days ago · 10 km deep · 85 km away
  3. 1.988 km S of Atka, Alaska · 2147 days ago · 13 km deep · 90 km away
  4. 2.9106 km ESE of Atka, Alaska · 2142 days ago · 19 km deep · 33 km away
  5. 3.6103 km SE of Atka, Alaska · 2142 days ago · 35 km deep · 14 km away
  6. 3.293 km SSE of Atka, Alaska · 2138 days ago · 35 km deep · 49 km away
  7. 2.8101 km SSE of Atka, Alaska · 2137 days ago · 35 km deep · 33 km away
  8. 3.373 km SE of Atka, Alaska · 2132 days ago · 14 km deep · 43 km away
  9. 2.0109 km S of Atka, Alaska · 2130 days ago · 65 km deep · 73 km away
  10. 4.1147 km E of Atka, Alaska · 2130 days ago · 34 km deep · 84 km away
  11. 2.862 km S of Atka, Alaska · 2128 days ago · 35 km deep · 88 km away
  12. 3.0Andreanof Islands, Aleutian Islands, Alaska · 2126 days ago · 12 km deep · 31 km away
  13. 2.9135 km ESE of Atka, Alaska · 2125 days ago · 103 km deep · 46 km away
  14. 2.7100 km SE of Atka, Alaska · 2125 days ago · 12 km deep · 16 km away
  15. 3.2142 km ESE of Atka, Alaska · 2124 days ago · 35 km deep · 68 km away
  16. 2.786 km E of Atka, Alaska · 2121 days ago · 112 km deep · 62 km away
  17. 1.944 km SSE of Atka, Alaska · 2118 days ago · 25 km deep · 79 km away
  18. 3.048 km SSW of Atka, Alaska · 2118 days ago · 49 km deep · 100 km away
  19. 1.643 km SSE of Atka, Alaska · 2118 days ago · 25 km deep · 81 km away
  20. 1.931 km SSE of Atka, Alaska · 2117 days ago · 17 km deep · 82 km away
  21. 2.735 km S of Atka, Alaska · 2116 days ago · 192 km deep · 95 km away
  22. 2.098 km S of Atka, Alaska · 2116 days ago · 25 km deep · 87 km away
  23. 1.925 km SSE of Atka, Alaska · 2113 days ago · 71 km deep · 93 km away
  24. 3.137 km ESE of Atka, Alaska · 2113 days ago · 128 km deep · 78 km away
  25. 2.056 km S of Atka, Alaska · 2113 days ago · 24 km deep · 79 km away
  26. 3.1Andreanof Islands, Aleutian Islands, Alaska · 2113 days ago · 128 km deep · 58 km away
  27. 3.666 km E of Atka, Alaska · 2110 days ago · 102 km deep · 74 km away
  28. 3.066 km S of Atka, Alaska · 2102 days ago · 20 km deep · 97 km away
  29. 2.539 km E of Atka, Alaska · 2097 days ago · 113 km deep · 88 km away
  30. 1.8Andreanof Islands, Aleutian Islands, Alaska · 2096 days ago · 16 km deep · 75 km away
  31. 3.4120 km ESE of Atka, Alaska · 2096 days ago · 35 km deep · 44 km away
  32. 2.684 km SSE of Atka, Alaska · 2095 days ago · 147 km deep · 54 km away
  33. 2.040 km S of Atka, Alaska · 2095 days ago · 44 km deep · 90 km away

Before

  1. 3.272 km ESE of Atka, Alaska · 2149 days ago · 100 km deep · 55 km away
  2. 3.090 km SSE of Atka, Alaska · 2149 days ago · 10 km deep · 39 km away
  3. 2.352 km SE of Atka, Alaska · 2158 days ago · 115 km deep · 60 km away
  4. 2.6166 km SSE of Atka, Alaska · 2159 days ago · 10 km deep · 75 km away
  5. 2.013 km SE of Atka, Alaska · 2162 days ago · 98 km deep · 99 km away
  6. 2.8Andreanof Islands, Aleutian Islands, Alaska · 2162 days ago · 26 km deep · 93 km away
  7. 1.640 km ESE of Atka, Alaska · 2164 days ago · 78 km deep · 79 km away
  8. 2.0161 km SSE of Atka, Alaska · 2165 days ago · 7 km deep · 96 km away
  9. 1.534 km SE of Atka, Alaska · 2166 days ago · 12 km deep · 78 km away
  10. 3.057 km ESE of Atka, Alaska · 2167 days ago · 76 km deep · 62 km away
  11. 1.699 km SSE of Atka, Alaska · 2167 days ago · 26 km deep · 62 km away
  12. 3.071 km ESE of Atka, Alaska · 2172 days ago · 15 km deep · 46 km away
  13. 2.892 km SE of Atka, Alaska · 2174 days ago · 35 km deep · 25 km away
  14. 2.921 km S of Atka, Alaska · 2176 days ago · 195 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000clx0 (also filed as ak020enob3ew). Read Fri, Oct 2, 2026, 3:54 PM UTC.